Bolt-anchor.



D. H. HAYwoon.

BOLT ANCHOR. Arruonxou num mm1. mu.

Patented Feb. 7. 1911.

I lllllI-Illlu' l.

` Vi/Tisis:

. y mveuron a gmonnm D. H. HAYWUUD IOL! AIOIOI. Annan!" nu In. 1. lm.

PMM Fab. 7,1911.

a Inn-unf a.

1.51m 2 2EE.;iu

INVENTOR -ln use t the ndjiicent edges of the inner tubular iii-gy UNi'ini i i "orifice rit'rnivfr oiiieioic.l

DANN L iitifftli!) IKAYWOOD. OF NE\V YORK. N. Y.

BOLT-ANCHOR. y t. u 983,442. specification of Letters Patent. PatentedFein?. 1911.

mi," con ein: non. r. nini sono no. 1.041.

To vilt ir/iom it nifty reni-fro.' inni-casini; the dillicitlty ofnormally hold- Ihi it known that l,l.t\,-\;ii, lloitiiin ll.tr ing themtogether, mich its resulte where wooo, :i 'citizen of the United .Statesof .spring clips, retnining lube, und the like, nro America, und :iAresident ot' New York, employed. county miti Stute of New' York, havein- .\ly invention also consists in certain devenu-il certain new undii-.etiil linprovetails ot' construction und combinations of iuentii inholt-Anchors. ot' which the folparte nach mi will be fully pointed outtierelowing is u iipcciliriition, ret'ii'cncc being iiiiil'ler, and inortlerthtit ui invention nitty had to thenceonipanying drawings, formbethorou hly understood, will now proing a part thereof. ceed totigescribe im embodiment. thereof,

My intention rcliites to iin irovciiit-nts in luningrcfcrenoe to theaccolnpiinyiu driiwbolt anchors of the t pe enip oyed in coinbiniitionwith bolts or securing objects to point out the novel features incliiiml. brirlt or tone walls or thc like, and Hpet'ilil ln tht'drawings: Fi ure l il In ele"- riilly to tluit cla-iot' bott anchorcoiopi'ioing tioniil view in perspective of ii bolt liicbor :incx|uiniblehellhaving iin iiiuci' tapering constructed in accordance with myinvenbore iidiiptcd to be expanded by the insertion. Fig. i. is ii viewin central longitudition ot u bolt therein. V niil section thcretlirouh. Fig. 3 il l View My inwntion consists broadly in a eonin trimmersesection t ierethrough. Fig. 4 tinuous tubulin' slit-ll provided with oneor is ii tlrtiiil fragmentary.perspective view 01 more linea ot'weakness, whereby tht` shell ii portion of one of the tubtihir segmentsbeis ntltipted to be dicrupted by und upon, the fore the outer coveringhas been applied insertion of ii boltl therein, either b direct.thereto. ltig. 5 is n view in pttrtill central or indirect engagementtherewit i. 'llie longitudinal section und tirtitil aide elevl.- shellmay, if desired, be formed iis a contion of another forni o the boltanchor. tinuous integral structure throughout, but. Fig. ti is im endview thereof. Fi 7 and it preferably comprises n continuous tubn- 8 arerespectively centriil lon itutlihnlnd hir coverin f ineloriini.r upliiriility of lou itrons't'eise sections of o furt ierinodilictitudiiudly ilivided tiibiiliir segments, t ie tion. Fig. 9 is ntrnnsverse scctionll view raid covering being of ti softer metnl tlinnof u further .modification Fig. 10 il l tlittt timiloycd for theinterior augmente. transverse sectional view o1' l further modiliiscovering is intended to yield or liciition. to be disrupted upon linescoincident with Referring tiret to the structure shown in Figs. l to 4inclusive the inner portion of the iiiichor comprises two tubulariiegiii'euttt l conveniently wenken the outer covering ltt-tl. i-iirlibeing ulotiintinlly semicyiit there mints. 'llw advantages ot noch iilindririil and arranged in iibiittingrelction construction tireiiuiny,tirat, it improves along lines '12. while the 011m' portion wintht` iippciii'iince of the shells iis ii iiiiirketiiblil priere ncontinuous exterior! cylindricll commodity, the exterior havingconveniently covering.r 13. The segmento 1 und 1l. ere the form of atrue and continuous cylinder; preferebly made of ii relittiyely herdme'tll second it provides iin etlcieut means for and are provided upontheir exterior'with holding the segments together thus doing projectionsIt; interiorly the nid legmentl iiwiiy with the objectionable clipshands, iiijo longitudinally tapered iind'nre provided und the likecommonly used for this piirwith lwrt-w-tlii'ciithi The exterior covpoectthird` it is eiisv und inexpensive to erinl tti is preferiibl i ot iireletively loft nuiiuitictnrc: fourth, it lends itself well. to nietiiund in practice it 'nitty conveniently be ings illustrating the sume,and '.v l then nientii, and to permit this to occur rendi theion.-.iiin.-t.ion ot the desirable forni of rust dircctLviipon theinterior tubular regholt. nuclior coinpriititi iin inner and outerniente. I

shell ot' relatively hiirt und ilott inctiihi tlisln use the anchor isiliiceil in it hole in .e

closed sind broadly claimed in iin iippliciistone or brick wall ort ielike, and ti bolt il tion tiled by uie'on the fith Iluy of Jiiniuiry,"inserted therein. the boltl iii gradually lttltt, und reriiillv numbered5!l(i,-ti t; und screwed itito the itliell the tubitliir Segmente litth.it enables tlio inner shell to be coin- I will be forced apart, thoeorerinii being dilposed ot' more than two segments without i'tiptodtilting the linesot union `titi-en the itis ee For some purri'ifiiienls. l'l' ilu iiietiil i sufficiently illic- Iile it inni' thmuiting Ilm-e lines to u eolisidvriihle extent. before it is liniillydisrupteil. ns will he well understood. As the shell l: is expended theproject-ions 1 4 will be forced into iiitiiniite engagement with thewiilis of the hole, being in inuiiy eases caused to actually embedthemselves therein, while the softer metal of the, portion 13 will beforced to llow to -an extent sucient to causo it to conform to thoconfiguration of the walls ol' the hole, whereh the anchor 'will he heldsecurely and stes ily in place. I conveniently provide lines of weaknessin i6 the outer covering along lines thereof in the plane or plum-s l2so thiit the outer shell will be readily disrupted in uae, and this mayhe conveniently accomplished by providing the inner tubular segments 10,1 1 with longitudinal ribs 16 s dJacent their uniting faces, the saidribs proiecting almost to the outer surface of the covering 13.

In Fi 5 and 6 I have shown a construction similar to that of Figs. 1 to4 except 95 that the inner tubular segments are made as sheet metalstaiiipings iniiteiid of castings. In auch case the ed Aes thereof mayhe turned outward as t 7 to forni the longitudinal ribs. In Figs. 'i'and' a stili further form is shown in which the tubular ilegments arenot coinpletel divided but are united at the outer end o the shell as at18. This is a common form of expsnsible anchor shell and is renderedpracticable by reason 85 of the fact that the inner end of the shell isexpanded with relation to the outer end, the M.,outei end beingsubstantial] nonex ansible. It will of course be un erstood t iat inreferring to the lo 40 bular segments is intended to include sucha'eo'striiction :is is aliewii iu Fi 5 for innsiiee wherein the segmentssrecoiiipletely divi from end to end, as well ss auch e construction saia' es shown iii Fig. 7 in which the ente while divided upon the lontndinal inea are not completeliy divided ut are united at the outer otthe shell as has inst been de- In Fig. 9 I have shown a cross sectionalview o! a structure in which there are three tubular segments instead oftwo; it will, of course, be u iderstoodbe thatl eietiier two a:

aegmen may ein as ma ls desired, iind indeed my przent invenzion rendersthe use of more t an two segments more practicable than heretofore,because.

of the fact that it solves the problem of holding them normallytogetheri cees t e ester or coverin might of a re ativeiy harder metalthiiii ipterior portion; in which case the-exterior portion would, ofcoursa,'be provided with @s ermore lilies 0 1 weahie along which it l54woiildlip readily disrupted, and in auch esse 't'idinsily divided tuthe interior portion mightl either oontiniioiislv tubular or segmental.iis might he liesii'ed, and in Fig. lli i have shown auch .i structurein ein! view, the exterior relatively hiird metiil covering 19 beingcontiniioiis hut To havin intemnl depressions .20 therein which forminca of weakness which nearly but not nite sever the outer covering, thein ner portion 21 ol' relatively soft metiil boing contiiiuouslytubular. s 4

Whiit I claim is:

i. A bolt anchor comprising an interior tuh'uliiil segmental shellcomposed of a rel- :itivelyY hard metiil, and n continuous tubularcovering therefor, composed of a relstively.8o soft metal. v

9. A bolt anchor comprising an interior shell com d of a plurality oflongitudinally divided tubulin'- se ents, and a coninuous tubularexpaiisi le covering thereas 3. A'bolt anchor comprising an interiorshell composed of ii pluralit of longitudinally divided. relatively liarmetal tubular ae ments, and s continuous tubular relative so t metalcovering therefor.

4. A lioltanchor comprising an interior shell coin d ot' a plurality oflongitudlnaily divided tubular segments and a continuous tuhularcovering therefor, the said covering having lines of weakness coincidentwith the dividing lines ofthe segments.

.'i. A bolt anchor comprising an interior shell composed of a luralityof longitudinully divided relative y hard metal, tubular segments, and acontinuous tubular i'elatively soft metnl coverii, therefor, the saidcovering havin lines o weakness coincident with the dividing lines ofthe segments.

6. A bolt anchor comprising an interior shell composed of a plurality oflongitudinelly div ded tubular segments provided with exterior-nbs attheir adio'lni ed and a continuons tiihnlar 7. A bolt anchor comprisingan interior 11 shell com of a plurality of longitudinally dividedtubular segments provided with exterior ribs at their adjoini edges andcomposed of s relatively ha metal, and a continuous tubulareoveringthei'efor 115 composed of a relatively soft metal.'

8. A bolt anchor comprising an interior Ptubular se ental shell comof-rel' s tively h a metal,and provi edwith exterior proieetions, and acontinuous tubular 12C covering therefor, composed of relatively. softmetal. i

il; A bolt. unchor coin pegiicntelmhell en .i caes d iiir me ii iiivinva ongitu inail ta rod 35 here, end provide with a cont-inubus ltitibu'-lar covering thercor'composed of a relatively soft metal.

rising a tubular of a relatively 10. bolt anchor comprising un interiorexpansiblc shell provided with exterior lon 13" mil ilvprcssiomrcomplementar to thu said l nitmlinnl ribs, nml n vnntimlmis uxtoviigrilinvsuftlwsniililuprssiunsumntlwvx|m||- .-hell fitted thonto provuhilwith longmnlh sum of tht- 51ml Inti-run' shvll n. HOWARD 11A' Ywoiiu.

ribs, the snitl ribs being of n might nlmoat l ahcll whereby thehlttu'i' said Ilwll is :uInplt-il y l". lt. (libwww, to longitudinallyllnl'uptml along tlue- Il. S. .\.vnm:\\'s,J|'.

